I think you might have the spelling off. ﻿"Željka" is the correct spelling, and is the feminine form of "﻿Željko". "﻿Želja﻿" means "desire", so ﻿Željka would be akin to "Desiree" in English.

The "﻿Ž" is pronounced like the "s" in leisure, and the "lj" is pronounced like the "-lli-" in "million".Bothe ﻿Željko and ﻿Željka are very popular names throughout Bosnia, Herzegovina, Croatia, Serbia, and the rest of the former Yugoslavia.